Exercise fs freeze/unfreeze and mount/umount race, which could lead to
use-after-free oops.
This commit fixed the issue:
1494583 fix get_active_super()/umount() race
This test case is based on a script from Monakhov Dmitriy.
Cc: Monakhov Dmitriy <dmonakhov@xxxxxxxxxx>
Signed-off-by: Eryu Guan <eguan@xxxxxxxxxx>
---
tests/generic/080 | 98 +++++++++++++++++++++++++++++++++++++++++++++++++++
tests/generic/080.out | 2 ++
tests/generic/group | 1 +
3 files changed, 101 insertions(+)
create mode 100755 tests/generic/080
create mode 100644 tests/generic/080.out
diff --git a/tests/generic/080 b/tests/generic/080
new file mode 100755
index 0000000..7d9fa5c
--- /dev/null
+++ b/tests/generic/080
@@ -0,0 +1,98 @@
+#! /bin/bash
+# FS QA Test No. 080
+#
+# Exercise fs freeze/unfreeze and mount/umount race, which could lead to
+# use-after-free oops.
+#
+# This commit fixed the issue:
+# 1494583 fix get_active_super()/umount() race
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2015 Red Hat Inc. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#-----------------------------------------------------------------------
+#
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ cd /
+ rm -f $tmp.*
+ cleanup_dmdev
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_fs generic
+_supported_os Linux
+_require_scratch
+_require_block_device $SCRATCH_DEV
+_require_command $DMSETUP_PROG
+_require_freeze
+
+setup_dmdev()
+{
+ table="0 $size_in_sector linear $SCRATCH_DEV 0"
+ $DMSETUP_PROG create $node --table "$table" >>$seqres.full 2>&1
+ $DMSETUP_PROG mknodes >/dev/null 2>&1
+}
+
+cleanup_dmdev()
+{
+ # in case it's still suspended and/or mounted
+ $DMSETUP_PROG resume $lvdev >/dev/null 2>&1
+ $UMOUNT_PROG $lvdev >/dev/null 2>&1
+
+ $DMSETUP_PROG remove $node >>$seqres.full 2>&1
+ $DMSETUP_PROG mknodes >/dev/null 2>&1
+}
+
+rm -f $seqres.full
+echo "Silence is golden"
+
+size=$((256 * 1024 * 1024))
+size_in_sector=$((size / 512))
+_scratch_mkfs_sized $size >>$seqres.full 2>&1
+
+node=$seq-test
+lvdev=/dev/mapper/$node
+setup_dmdev
+
+for ((i=0; i<100; i++)); do
+ $DMSETUP_PROG suspend $lvdev >/dev/null 2>&1
+ $DMSETUP_PROG resume $lvdev >/dev/null 2>&1
+done &
+pid=$!
+for ((i=0; i<100; i++)); do
+ $MOUNT_PROG $lvdev $SCRATCH_MNT >/dev/null 2>&1
+ $UMOUNT_PROG $lvdev >/dev/null 2>&1
+done &
+pid="$pid $!"
+
+wait $pid
+
+status=0
+exit
diff --git a/tests/generic/080.out b/tests/generic/080.out
new file mode 100644
index 0000000..11a4a1a
--- /dev/null
+++ b/tests/generic/080.out
@@ -0,0 +1,2 @@
+QA output created by 080
+Silence is golden
diff --git a/tests/generic/group b/tests/generic/group
index ee5b642..cf7408c 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -82,6 +82,7 @@
077 acl attr auto enospc
078 auto quick metadata
079 acl attr ioctl metadata auto quick
+080 auto freeze mount
083 rw auto enospc stress
088 perms auto quick
089 metadata auto
--
2.1.0
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